JPH0727263B2 - Multilayer photoconductor - Google Patents
Multilayer photoconductorInfo
- Publication number
- JPH0727263B2 JPH0727263B2 JP61263488A JP26348886A JPH0727263B2 JP H0727263 B2 JPH0727263 B2 JP H0727263B2 JP 61263488 A JP61263488 A JP 61263488A JP 26348886 A JP26348886 A JP 26348886A JP H0727263 B2 JPH0727263 B2 JP H0727263B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- thickness
- charge generation
- photoreceptor
- alumite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/10—Bases for charge-receiving or other layers
- G03G5/104—Bases for charge-receiving or other layers comprising inorganic material other than metals, e.g. salts, oxides, carbon
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、基板上に少なくも電荷発生層と電荷輸送層を
設けた積層型感光体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a layered type photoconductor in which a charge generation layer and a charge transport layer are provided on a substrate.
従来の技術 従来、電子写真法に使用される感光体の感光層を形成す
る感光材料としては、セレン、酸化亜鉛、酸化チタン、
硫化カドミニウムなどの無機系光導電性材料が用いられ
てきた。しかし、これらは数多くの欠点を有しており、
一般に毒性が強いものが多く、また、耐湿性等にも問題
があった。2. Description of the Related Art Conventionally, selenium, zinc oxide, titanium oxide, selenium, as a photosensitive material for forming a photosensitive layer of a photoreceptor used in electrophotography,
Inorganic photoconductive materials such as cadmium sulfide have been used. However, they have a number of drawbacks,
Generally, many of them are highly toxic, and there is a problem in moisture resistance.
一方、有機系光導電性材料を用いた感光体は、成膜性、
軽量性、価格の点で優れているが、未だ十分な感度、耐
久性および環境変化による安定性の点で問題がある。On the other hand, the photoreceptor using the organic photoconductive material has
Although it is excellent in terms of lightness and price, it still has problems in terms of sufficient sensitivity, durability and stability due to environmental changes.
近年、電荷の発生と輸送という機能を分離した積層型感
光体が提案され、有機系光導電性材料を使用した従来の
感光体の欠点が大幅に改良された結果、有機感光体が実
用化され、急速な進歩を遂げつつある。In recent years, a multi-layer type photoconductor in which the functions of charge generation and transport are separated has been proposed, and the drawbacks of conventional photoconductors using organic photoconductive materials have been greatly improved, resulting in the practical use of organic photoconductors. , Is making rapid progress.
積層型感光体は金属アルミニウム、銅等の導電性基板上
に電荷発生層と電荷輸送層を順次積層した構成を有す
る。The laminated photoreceptor has a structure in which a charge generation layer and a charge transport layer are sequentially laminated on a conductive substrate such as metal aluminum or copper.
これらの積層型感光体は、電荷保持性、高感度、繰り返
し安定性、耐絶縁破壊性、耐摩耗性、耐久性、耐湿性、
転写性、クリーニング性、保存安定性などの基本的な条
件を満足することが要求される。These laminated type photoreceptors have charge retention, high sensitivity, repeated stability, dielectric breakdown resistance, abrasion resistance, durability, moisture resistance,
It is required to satisfy the basic conditions such as transferability, cleaning property and storage stability.
さらに、積層型感光体はレーザープリンタ用としても使
用され、反転現像時での高い画像信頼性、繰り返し安定
性が要求されるようになった。Further, the laminated type photoconductor is also used for a laser printer, and high image reliability and repetitive stability at the time of reversal development are required.
発明が解決しようとする問題点 従来の積層型感光体において、特に電荷発生層が樹脂に
顔料を分散させた分散膜の場合には、基板との接着性や
塗工性、基板から電荷輸送層への電荷注入など色々な問
題があった。これらは導電性基板の問題も大きく、基板
上の欠陥や、電荷注入性、接着性の改善が必要である。
これらの対策として特開昭58−30757号、特開昭58−957
44号において下引き層を用いた感光体が提案されてい
る。また、特開昭58−14841号、特開昭59−41360号、特
開昭61−140947号においてアルミニウム支持体をアルマ
イト処理した感光体が提案されている。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In a conventional laminated type photoreceptor, particularly when the charge generation layer is a dispersion film in which a pigment is dispersed in a resin, adhesiveness to a substrate, coating property, charge transport layer from the substrate There were various problems such as charge injection into the. These have a serious problem of the conductive substrate, and it is necessary to improve defects on the substrate, charge injection property and adhesive property.
As measures against these problems, JP-A-58-30757 and JP-A-58-957 have been adopted.
No. 44 proposes a photoreceptor using an undercoat layer. Further, in JP-A-58-14841, JP-A-59-41360, and JP-A-61-140947, there have been proposed photoreceptors obtained by subjecting an aluminum support to an alumite treatment.
しかし、特開昭58−30757号、特開昭58−95744号に開示
されている下引き層はその電気抵抗が外部の環境の変
化、特に大気中の湿度の変化により大きな影響を受け、
低湿度になるとカブリが生じたりする。また、電気抵抗
が高いと下引き層に帯電電位が印加され、いわゆる残留
電位として、画像にカブリが発生する。下引き層にはこ
のようないろいろな特性が要求されるが、単一樹脂だけ
の場合には、良好なものが得がたいものであった。その
ため、樹脂膜の膜厚を非常に薄くするか、あるいは必要
に応じて導電性粉末（金属粉など）を樹脂に分散させて
いる。しかし、樹脂層の膜厚を薄くすることは、下引き
層としての性能が十分でなくなる欠点を有しており、一
方、金属粉を分散させた下引き層では、金属粒子が荒い
ため、下引き層の表面性が低下する欠点があった。However, the electric resistance of the undercoat layer disclosed in JP-A-58-30757 and JP-A-58-95744 is greatly affected by changes in the external environment, particularly humidity in the atmosphere.
Fog may occur at low humidity. Further, when the electric resistance is high, a charging potential is applied to the undercoat layer, causing fog in the image as a so-called residual potential. The undercoating layer is required to have such various characteristics, but it is difficult to obtain a good one when only a single resin is used. Therefore, the film thickness of the resin film is made extremely thin, or conductive powder (metal powder or the like) is dispersed in the resin as needed. However, reducing the film thickness of the resin layer has a drawback that the performance as an undercoat layer is not sufficient, while in the undercoat layer in which the metal powder is dispersed, the metal particles are coarse, There is a drawback that the surface property of the pulling layer is lowered.
特に、従来の積層型感光体を、レーザープリンターに応
用しても、反転現像時白紙部で発生する微小な黒斑点に
対してはあまり効果がなかった。In particular, even if the conventional laminated type photoreceptor is applied to a laser printer, it is not so effective for the minute black spots generated on the white paper portion during the reversal development.
一方、特開昭58−14841号は、アルミニウム支持体を、
比抵抗が106Ω・cm以上かつ温度が60℃以上である水中
に浸漬させる工程を含む感光体を開示する。特開昭59−
41360号は、フタロシアニン蒸着膜を電荷発生層とし、
アルミニウム支持体を処理して少なくとも４μｍの封孔
処理を施さない陽極酸化膜を形成する感光体を開示す
る。特開昭61−140947号はアルミニウム支持体の表面に
ａ−Siを形成する際に、アルミニウム支持体に予めアル
マイト処理を施して、バリア層と多孔質層を設けた感光
体が開示されている。しかし、これらに開示された技術
は、電荷発生層が分散膜の場合、反転現像時に発生する
黒斑点に対しての改良が示されておらず、また条件的に
も何等記載がない。On the other hand, JP-A-58-14841 discloses that an aluminum support is
Disclosed is a photoreceptor including a step of immersing in water having a specific resistance of 10 6 Ω · cm or more and a temperature of 60 ° C. or more. JP 59-
No. 41360 uses a phthalocyanine vapor deposition film as a charge generation layer,
Disclosed is a photoreceptor in which an aluminum support is treated to form a non-sealing anodized film of at least 4 μm. JP-A-61-140947 discloses a photoconductor in which a barrier layer and a porous layer are provided by previously subjecting the aluminum support to an alumite treatment when forming a-Si on the surface of the aluminum support. . However, in the technologies disclosed in these documents, when the charge generation layer is a dispersion film, no improvement is shown for black spots generated during reversal development, and no description is made conditionally.
本発明は、上記欠点を解消した感光体を提供することを
目的とし、具体的には、特定の導電性基板を用いること
により電子写真特性全般に優れた感光体を提供すること
を目的とする。An object of the present invention is to provide a photoconductor in which the above drawbacks are eliminated, and specifically to provide a photoconductor having excellent electrophotographic properties by using a specific conductive substrate. .
問題点を解決するための手段 本発明は、アルミニウム基板上に少なくとも電荷発生層
と電荷輸送層を有する感光体において、該電荷発生層が
有機顔料の樹脂分散膜であり、該アルミニウム基板がア
ルマイト層を有し、該アルマイト層のバリアー層の厚み
が100〜1000Å、多孔質層の厚みが１〜15μｍであるこ
とを特徴とする積層型感光体に関する。Means for Solving the Problems The present invention relates to a photoreceptor having at least a charge generation layer and a charge transport layer on an aluminum substrate, wherein the charge generation layer is a resin dispersion film of an organic pigment, and the aluminum substrate is an alumite layer. And a barrier layer of the alumite layer having a thickness of 100 to 1000Å and a porous layer having a thickness of 1 to 15 μm.
上記アルマイト処理されたアルミニウム支持体は接着性
等の上で改善されるが、特に、感光特性の上で良好な特
性が得られる条件下で作製される必要がある。アルマイ
ト層の役目としては、接着性の付与、電荷注入防止性、
整流性が必要であり、バリヤー層の厚さが100〜1000Å
であり、多孔質層の厚さが１〜15μｍのものが良好であ
る。The alumite-treated aluminum support is improved in adhesiveness and the like, but in particular, it needs to be produced under the condition that good characteristics are obtained in terms of photosensitivity. The role of the alumite layer is to impart adhesiveness, prevent charge injection,
Rectification is required, and barrier layer thickness is 100-1000Å
It is preferable that the thickness of the porous layer is 1 to 15 μm.
本発明の感光体は、該感光体の支持体として円筒状等の
適宜な形状に加工されているアルミニウム支持体を陽極
とし、電解液として硫酸あるいはシュウ酸等を用いて電
解処理を行い、この表面にアルマイト層を形成する。一
般に、アルマイト層は、基板上にバリアー層および多孔
質層の二層からなる。バリヤー層の厚みの調整は、電解
電圧を調整することにより可能であり、多孔質層の厚み
の調整は、電解時間を調整することにより可能である。
アムマイト層の役目として電荷注入防止性があり、その
ためにはバリヤー層の厚みを大きくとる必要がある。し
かしながら、バリヤー層を厚くしすぎると残留電位の上
昇となり、感度の低下や、繰り返し時におこるカブリ等
の原因となる。The photoreceptor of the present invention uses an aluminum support, which is processed into a suitable shape such as a cylindrical shape, as a support of the photoreceptor as an anode, and performs electrolytic treatment using sulfuric acid or oxalic acid as an electrolytic solution. An alumite layer is formed on the surface. Generally, the alumite layer consists of two layers, a barrier layer and a porous layer, on the substrate. The thickness of the barrier layer can be adjusted by adjusting the electrolysis voltage, and the thickness of the porous layer can be adjusted by adjusting the electrolysis time.
The role of the ammite layer is to prevent charge injection, and for that purpose, it is necessary to increase the thickness of the barrier layer. However, if the barrier layer is made too thick, the residual potential will rise, which will cause a decrease in sensitivity and fog that occurs during repetition.
したがって、バリヤー層の厚みは100〜1000Å、好まし
くは100〜500Åが望ましい。Therefore, the thickness of the barrier layer is 100 to 1000Å, preferably 100 to 500Å.
多孔質層の厚みは、接着性の付与を併ない、ある程度の
厚みが必要であるが、厚すぎると、残留電位の上昇や暗
電流の増加となって表われる。したがって、多孔質層の
厚みは１〜15μｍ、好ましくは２〜10μｍ、より好まし
くは２〜８μｍが望ましい。The thickness of the porous layer needs to have a certain thickness in order not to impart adhesiveness, but if it is too thick, the residual potential increases and the dark current increases. Therefore, the thickness of the porous layer is preferably 1 to 15 μm, preferably 2 to 10 μm, more preferably 2 to 8 μm.
本発明の感光体は、上述したアルマイト層を有する基板
で構成することにより、反転現像を行うレーザープリン
ター等で特に問題となる黒斑点発生の抑制された良好な
ものとなる。When the photoreceptor of the present invention is composed of the above-mentioned substrate having the alumite layer, it becomes a good one in which the generation of black spots, which is a problem particularly in a laser printer for reversal development, is suppressed.
本発明の電荷発生層に用いられる有機顔料としては、各
種アゾ顔料、ペリレン系顔料、フタロシアニン系顔料、
多環キノン系顔料、インジコ系顔料、キナクリドン系顔
料などが挙げられる。Examples of the organic pigment used in the charge generation layer of the present invention include various azo pigments, perylene pigments, phthalocyanine pigments,
Examples thereof include polycyclic quinone pigments, indico pigments, and quinacridone pigments.
電荷発生層は、結着剤樹脂を適切な溶剤を用いて溶解
し、これに上記の顔料を結着樹脂100重量部に対して10
〜200重量部加え、ボールミル、振動ミル、サンドミ
ル、ロールミル等の方法で分散させた溶液を0.1〜１μ
ｍに塗布することにより得られる。The charge generation layer is prepared by dissolving a binder resin using a suitable solvent and adding the above pigment to the binder resin in an amount of 10 parts by weight based on 100 parts by weight of the binder resin.
~ 200 parts by weight, and 0.1 ~ 1μ of the solution dispersed by ball mill, vibration mill, sand mill, roll mill, etc.
It is obtained by applying to m.
電荷輸送層は、ピラゾリン、トリフェニルメタン、オキ
サジアゾール、カルバゾール、ヒドラゾン、スチリル、
イミダゾール等の誘導体から成る電子供与性物質やトリ
ニトロフルオレノン、テトラニトロキサントン、テトラ
シアノエチレン、テトラシアノキノジメタン等の電子受
容性など、電荷輸送性のある物質を成膜性のある樹脂に
溶解させて５〜30μｍに塗布することにより得られる。The charge transport layer includes pyrazoline, triphenylmethane, oxadiazole, carbazole, hydrazone, styryl,
Dissolving electron-donating substances consisting of derivatives such as imidazole and substances with charge-transporting properties such as electron-accepting substances such as trinitrofluorenone, tetranitroxanthone, tetracyanoethylene, tetracyanoquinodimethane in film-forming resins It can be obtained by coating and coating to 5 to 30 μm.
電荷発生層や電荷輸送層に使用される結着剤樹脂として
は、ポリエステル、ポリカーボネート、ポリメタクリル
酸エステル、ポリビニルブチラール、シリコン樹脂、エ
ポキシ樹脂、メラミン樹脂、ウレタン樹脂、ポリスチレ
ン等が挙げられる。Examples of the binder resin used in the charge generation layer and the charge transport layer include polyester, polycarbonate, polymethacrylic acid ester, polyvinyl butyral, silicone resin, epoxy resin, melamine resin, urethane resin, polystyrene and the like.
本発明の感光体は、アルマイト処理されたアルミニウム
基板上に、電荷発生層ついで電荷輸送層を積層した構成
としてもよいし、電荷輸送層ついで電荷発生層を積層し
た構成としてもよい。さらにそれらの感光体は必要に応
じて表面保護層、下引き層あるいは中間層を有してもよ
い。The photoreceptor of the present invention may have a structure in which a charge generation layer and then a charge transport layer are laminated on an alumite-treated aluminum substrate, or a structure in which a charge transport layer and then a charge generation layer are laminated. Further, those photoreceptors may have a surface protective layer, an undercoat layer or an intermediate layer, if necessary.
以下、実施例をあげて本発明を説明する。実施例中、特
に記載しない限り、「部」は総て「重量部」を示す。Hereinafter, the present invention will be described with reference to examples. In the examples, all "parts" are "parts by weight" unless otherwise specified.
実施例１ 導電性基板として、旋盤加工による表面処理が施された
アルミニウムを使用し、その表面を液温20℃±１℃の硫
酸15vol％を有する電解浴にて表面にアルマイト層を形
成させた。このアルマイト層のバリヤー層は200Å、多
孔質層は６μｍであった。Example 1 As a conductive substrate, aluminum subjected to surface treatment by lathing was used, and an alumite layer was formed on the surface of the conductive substrate by an electrolytic bath containing sulfuric acid 15 vol% at a liquid temperature of 20 ° C. ± 1 ° C. . The barrier layer of this alumite layer was 200Å, and the porous layer was 6 μm.
次に、この基板上に、電荷発生層として、無金属フタロ
シアニン（東洋インキ（株）製）１部およびポリスチレ
ン１部とシクロヘキサノン50部をボールミルポットに入
れて24時間分散し、感光塗液を得た。これを塗布、乾燥
することにより、厚さ0.5mの電荷発生層を得た、この電
荷発生層の上に、 を10部、ポリカーボネート樹脂10部をテトラヒドロフラ
ン100部に溶解させた塗布液を、乾燥後の膜厚が15μｍ
となるように塗布して電荷輸送層を形成させ、感光体を
作製した。Next, 1 part of metal-free phthalocyanine (manufactured by Toyo Ink Co., Ltd.) and 1 part of polystyrene and 50 parts of cyclohexanone were placed in a ball mill pot as a charge generation layer on this substrate and dispersed for 24 hours to obtain a photosensitive coating solution. It was By applying and drying this, a charge generation layer having a thickness of 0.5 m was obtained. On this charge generation layer, Of 10 parts and 10 parts of polycarbonate resin dissolved in 100 parts of tetrahydrofuran to give a coating film having a thickness of 15 μm after drying.
To form a charge transport layer, and a photoconductor was prepared.
実施例２〜７ バリアー層 多孔質層 実施例２ 150Å 3μｍ 実施例３ 300Å 6μｍ 実施例４ 500Å 9μｍ 実施例５ 200Å 10μｍ 実施例６ 300Å 15μｍ 実施例７ 800Å 7μｍ バリアー層および多孔質層を上記のように調製する以外
は実施例１と全く同様にして感光体を作製した。Examples 2 to 7 Barrier layer Porous layer Example 2 150Å 3 μm Example 3 300Å 6 μm Example 4 500Å 9 μm Example 5 200Å 10 μm Example 6 300Å 15 μm Example 7 800Å 7 μm Barrier layer and porous layer as described above A photoconductor was prepared in exactly the same manner as in Example 1, except that the above procedure was used.
実施例８ 電荷発生層に用いる顔料を下記一般式で表わされるジス
アゾ顔料を用いた以外は、実施例１と全く同様にして感
光体を作製した。Example 8 A photoconductor was prepared in exactly the same manner as in Example 1 except that the disazo pigment represented by the following general formula was used as the pigment for the charge generation layer.
比較例１〜３ バリヤー層の厚さ 多孔質層の厚さ １ 60Å 0.5μｍ ２ 1500Å 3 μｍ ３ 200Å 20 μｍ のアルマイト層を使用すること以外は、実施例１と全く
同様にして感光体を作製した。 Comparative Examples 1 to 3 Thickness of Barrier Layer Thickness of Porous Layer 1 60 Å 0.5 μm 2 1500 Å 3 μm 3 200 Å Except for using an alumite layer of 20 μm, a photoconductor was prepared in exactly the same manner as in Example 1. did.
比較例４ アルマイト処理していないアルミニウム基板を使用した
以外は実施例１と同様に感光体を作製した。Comparative Example 4 A photoconductor was prepared in the same manner as in Example 1 except that an aluminum substrate that was not anodized was used.
得られた感光体を粉像転写型複写機（ミノルタカメラ
（株）製EP−470Z）を用い、コロナ帯電させ、初期表面
電位（V0）を−750Vとした時の、初期電位を1/2にする
ために要した露光量をE1/2（lux・sec）、５秒間暗所に
放置した時の初期電位の減衰率DDR5（％）および残留電
位Vr（Ｖ）を測定した。その結果を表−１に示す。The obtained photoreceptor was corona charged using a powder image transfer type copying machine (EP-470Z manufactured by Minolta Camera Co., Ltd.), and the initial surface potential (V 0 ) was set to −750 V, the initial potential was 1 / The exposure amount required to reach 2 was E1 / 2 (lux · sec), and the decay rate DDR 5 (%) of the initial potential and the residual potential Vr (V) when left in the dark for 5 seconds were measured. The results are shown in Table-1.
また、V0＝−750V、現像バイアスVb＝−500Vで反転現像
したときの画像上の白紙部での黒斑点を測定した。その
結果を表−２に示す。表２中、○は良好なことを、×は
問題があることを、××は非常に悪いことを表す。Further, black spots on a white paper portion on an image when reversal development was performed with V 0 = −750V and developing bias Vb = −500V were measured. The results are shown in Table-2. In Table 2, ◯ means good, × means problem, and XX means very bad.
発明の効果 本発明にかかる積層型感光体によれば、電荷発生層とア
ルミニウム支持体との接着性が飛躍的に向上し、また、
アルマイト層の整流作用により、電荷注入防止性が向上
し、反転現像時、白紙部で問題となる黒斑点の発生がお
さえられ、電荷発生層の顔料分散塗液の塗工性が改善さ
れ、良好な電子写真特性が得られる。 EFFECTS OF THE INVENTION According to the laminated type photoreceptor of the present invention, the adhesiveness between the charge generation layer and the aluminum support is dramatically improved, and
Due to the rectification function of the alumite layer, the charge injection prevention property is improved, black spots which are a problem on the white paper part are suppressed at the time of reversal development, and the coatability of the pigment dispersion coating liquid of the charge generation layer is improved. Excellent electrophotographic characteristics can be obtained.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−240247（ＪＰ，Ａ) 特開 昭54−89637（ＪＰ，Ａ) 特開 昭61−140947（ＪＰ，Ａ) 特開 昭61−105560（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A 61-240247 (JP, A) JP-A 54-89637 (JP, A) JP-A 61-140947 (JP, A) JP-A 61- 105560 (JP, A)
Claims (1)
層と電荷輸送層を有する感光体において、該電荷発生層
が有機顔料の樹脂分散膜であり、該アルミニウム基板が
アルマイト層を有し、該アルマイト層のバリアー層の厚
みが100〜1000Å、多孔質層の厚みが１〜15μｍである
ことを特徴とする積層型感光体。1. A photoreceptor having at least a charge generation layer and a charge transport layer on an aluminum substrate, the charge generation layer being a resin dispersion film of an organic pigment, the aluminum substrate having an alumite layer, and the alumite layer. And a porous layer having a thickness of 100 to 1000Å and a porous layer having a thickness of 1 to 15 μm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61263488A JPH0727263B2 (en) | 1986-11-04 | 1986-11-04 | Multilayer photoconductor |
| US07/116,170 US4800144A (en) | 1986-11-04 | 1987-11-03 | Laminated type photosensitive member for electrophotography comprising a substrate of aluminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61263488A JPH0727263B2 (en) | 1986-11-04 | 1986-11-04 | Multilayer photoconductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63116160A JPS63116160A (en) | 1988-05-20 |
| JPH0727263B2 true JPH0727263B2 (en) | 1995-03-29 |
Family
ID=17390210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61263488A Expired - Lifetime JPH0727263B2 (en) | 1986-11-04 | 1986-11-04 | Multilayer photoconductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0727263B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63314555A (en) * | 1987-06-17 | 1988-12-22 | Showa Alum Corp | Electrophotographic organic sensitive body |
| JPH0414053A (en) * | 1990-05-07 | 1992-01-20 | Ricoh Co Ltd | Manufacture of electrophotographic sensitive body |
| JPH07191489A (en) * | 1993-12-27 | 1995-07-28 | Fuji Electric Co Ltd | Electrophotographic photoreceptor |
| JPH0882946A (en) | 1994-09-14 | 1996-03-26 | Fuji Electric Co Ltd | Electrophotographic photoreceptor and its production |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5022637A (en) * | 1973-06-26 | 1975-03-11 | ||
| JPS5489637A (en) * | 1977-12-19 | 1979-07-16 | Mita Industrial Co Ltd | Improvement of electrophotographic method |
| JPS58100138A (en) * | 1981-12-09 | 1983-06-14 | Canon Inc | Electrophotographic receptor |
| JPS5941360U (en) * | 1982-09-10 | 1984-03-16 | 沖電気工業株式会社 | electrophotographic photoreceptor |
| JPS59104651A (en) * | 1982-12-07 | 1984-06-16 | Oki Electric Ind Co Ltd | Manufacture of electrophotographic sensitive body |
| JPS59104659A (en) * | 1982-12-08 | 1984-06-16 | Mitsubishi Chem Ind Ltd | Electrophotographic sensitive body |
| JPS59226350A (en) * | 1983-06-08 | 1984-12-19 | Oki Electric Ind Co Ltd | Manufacture of electrophotographic sensitive body |
| DE3329442A1 (en) * | 1983-08-16 | 1985-03-21 | Hoechst Ag, 6230 Frankfurt | ELECTROPHOTOGRAPHIC RECORDING MATERIAL AND METHOD FOR THE PRODUCTION THEREOF |
| JPS61105560A (en) * | 1984-10-29 | 1986-05-23 | Komatsu Ltd | Electrophotographic sensitive body |
| JPS61140947A (en) * | 1984-12-13 | 1986-06-28 | Komatsu Ltd | Manufacture of electrophotographic sensitive body |
| JPS61240247A (en) * | 1985-04-17 | 1986-10-25 | Canon Inc | Electrophotographic sensitive body and its image forming method |
| JPH0727264A (en) * | 1993-05-14 | 1995-01-27 | Michizou Nishimura | Compression type tube joint |
-
1986
- 1986-11-04 JP JP61263488A patent/JPH0727263B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63116160A (en) | 1988-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |